In the forth episode of my "Under-the-Hood"-Series for the German Eclipse-Magazin I discuss the potential behind the Extension-Point-Mechanism which is at the heart of the Eclipse architecture. My message is, that you can use the Equinox Extension-Registry for much more than just adding extensions to existing RCP extension points like views and editors. The mechanism allows you to create really flexible architectures for your business applications - on the client side as well as on the server. Unfortunately the article is written in German (and can be found here) but if you would like to know more about my experiences and are not familiar with the German language do not hesitate to contact me.
Forth Article on Eclipse Internals Available